Improved machine foe heading bolts



@uiten tatzs getest @fnf Letiers PaenLNo. 80,198, dated July 2], 1868.

IMPROVED MACHINE POR HEADING BOLTS this tlphnic retard it ttt timetttters atntt tnt mating ,qui nt tige anni,

TO WHOM IT MAY CONOERN:

Beit known that I, WILLIAM MELVLL, ot' Paterson, in the county ofPassaic,.and State of New Jersey,

`have invented a new and improved Bolt and Rivet-Heading Machine; and Ido hereby declare that the followini,r is a full, clear, and exactdescription thereof, which will enable others skilled in the art to makeand use the 'sa-me, reference being had to the accompanying drawings,forming part of this specification.

Figure 1, Sheet I, represents a plan or top view,partly in section, ofmy improved bolt and rivet-heading machine.

4Figure 2, Sheet II,` is a vertical transverse section of the same,taken on the plane of the line x x, tig. 1. Figure 3, Sheet II, is alongitudinal vertical section of the same, taken on the plane ot' theline y y, iig. 1. Similar letters ofreference indicate correspondingparts. The invention relates to'an improved machine for cutting theblanks and forforming the heads of bolts nud rivets, and consists insuch an arrangement -and combination of dies, bolders,'punch, andcutter, that the desired result will be attained with simple mechanismand in a short time.

The whole` machine operates perfectly automatically, as after thevariouspartshave been' adjusted to the production of certain kinds ofrivets orbolts, theend of the bar has only to be inserted in the machine, when itwill ybe cut, and the seperated blank will beheld and headed in thedesired manner, as will be hereinafter nore fully described.

Thepunch as well as the dies and holders can be easily removed andreplacedLso as to allow the application of the machine to bolts andrivets of variouslengtli and shape.

A, in the drawing, represontsthc frame of my improved bolt andrivet-heading machine. The said frame 'is made of'wood or metal, or ofboth, and in its rear part are the bearings for ahorizontaldriving-shaf, to which rotary motion is imparted by suitable mechanism.i l

-'In front of the 'driving-shaft are arranged, in an elevated portion ofthe frame, the bearings 'for a shaft, C, which is, parallel with thedriving-shaft, but higher than the same, as shown. i v l On the sl1ut`tG.is a cam, a, which operates a sliding block, D, that carries at itslower end a heading-die, E, as shown. Above the shaft C is attached tothefrai'ne A, a stationary yoke, b, to which a suitable spring, F, issecured, which serves to raise the block D. Thus, it' the shaft Crevolves, the cam adepresses the block d) and dieE, and then the sameare raised againfby the spring F. The shaft C receives rotary motion bymeans of gear-wheels, a, or otherwise, from the shaft B, or from anyother suitable shaft.

Under the die E is arranged, in the trarne it, a stationary die, G,wl1ich has a grooved upper surface, the groove beingl of equal size andform as that in the lower surface of the die E.

In tig. 2., these grooves are represented to be so shaped that a squarehole is produced through the whole die, E G, when E is upon G, as infig. 3. Both dies E G can be Measily removed, and replaced by othershaving diiertnt'sized or shaped grooves. They are secured iii-anysuitable manner into their respective holders, but I prefetto dove-tailthem into their places, asl indicated in tig. 1. I I

On the shaft .13, in line with the grooves in the lies E G, is mounted acam, d, which serves to move n. sliding block, H, toward the said dies,while a spring, e, shown in iig. 3, serves to draw the said block towardthe shaft B. l

In the block it is held a punch,`I, the end otwhieh is so shaped that itwill accurately f it the grooves in the aforesaid dies.

During the rotation of the shaft B, the punch is alternateiy movedforward and backward, being moved forward when the die E is down, andbackward when the same is or is being raised. The punch has ahead,f,

at or near its rear end, byV which it is held in and moved by the blockH. It is fitted from `the top or side into.

a groove in the said block, andis therefore easily removable, to bereplaced by one of' di'pe'rent length, or by one that has adiiIcrent-shaperl end.

In front of the die G are pivoted, with their lower ends to the frame A,and opposite to each other, two

sones 2 swinging bars, plates, or frames, J J, which have boxes, K K,formed at their upper ends. 'In these boxes are fitted the blank-holdersL L, as shown. By means of springs, g g, the frames J are held apart,`asin iig. 2, and

the grooved faces of the blank-holders are then also apart.

The boxes Klare formed with oblique outer sides, as in lig.1,snd againstthese oblique sides lit the oblique faces of sliding wedges, M M, thatare operatel by means of ca-ms, It, on the shaft B. When the wedges arepushed forward by the earns, they swing the frames J J-townrd eachother, so that the faces of the holders L come in contaet,'as in iig. 1,and the grooves in the said holders then ferm va hole, which isin linewith the hole through the dies E G, and which is of such size that-theblank to beheaded will be held in it.

The holders can be easily removed Yfrom the boxesl K, to be replaced byothers, which will hold blanks of different length or diameter. When thecams L cease yto act upon "thelwedges,^the sume are either drawn orforced back by the indirect action of the springs g, or by that ofsprings i -z acting directly upon them, and

'then the frames J are again swung apart by the springs h.

The frames J may be pivoted at their upper` ends to an elevated part ofthe frame A, in whichcase the boxes K will be formed at their lowerends. The action ot' the parts will, in that case', remain similar tethat described.

On the front end of one of the holders L is formed, secured, or attacheda cutter, N, which, as the holders are forced together by the action otthe wedges, sweeps past the front end of the other holderfL, and cutsany bar that may be held between the holders.

The main advantage ot`v the swinging holders L L over sliding holdersis, that by that motion a drawing cut is produced by the cutter, andless power to operate the cutter is consequently required,

The operation ot' the machine will, tromthe above, be sul'licientlyclear, but I wil-l reeapitulate the'variousV motions in the order inwhich theyl uct upon the blank.

The end of the bar from which the blank is tolbe made is held uponthedie G against the end of the then withdrawn punch I. The bar may bepartly supported by an adjustable support, j, as shown in iig. 3.

The holders L L are then simultaneously, with-the' die E, moved towardthe bar, and thereby the front end of the blank is cut off by thecutter. The' separated blank is then heldby the holders L, and its rearend is within the dies E G., l A

The punch is then moved forward, and heads that portion of theblank-which is within the dies, and then simultaneously the holders anddies are drawn apart, and the punch moved back, so as to release thefinished bolt or rivet, which falls oil` the die G. l

The machine is then in position to receive a new blank, and to act uponthe same in the aforesaid manner,

By means of suitable stops, one of theframes J can be retained in itsupright position, when its box K or holder I can answer for au anviltoshape the ends of bars, or for other purposes. v

I claim as new, and desire to secure by Letters Patent- The improvedbolt and rivet-heading machine, consisting ofthe oscillating-holder L L,carrying the cutter N 'of the stationary die G and reciprocating dieE,Aand of the reciprocating punch I, al1 made and arranged substantiallyas herein shown and described, and combined with the two cam-shat`ts Band C and springs g, F,

and c, respectively, in the manner setforth.

' WILLIAM MELVELL.

Witnesses:

JNO. BRUSH, WrtLrAu OCoxn'on.

